add dev stage to dockerfile (#1953)

* add dev stage to dockerfile

* update readme

* bump ruby version for docker contianers

Author: pwoleary

Dockerfile

@@ -1,7 +1,7 @@
 ############################################
 #  🏗  Stage 1 – build gems + assets
 ############################################
-FROM ruby:3.3.5-slim AS builder
+FROM ruby:3.3.8-slim AS builder
 
 # Essential OS packages (compile + JS pipeline)
 # RUN apt-get update
@@ -29,9 +29,9 @@ RUN chmod +x /usr/local/bin/docker_entrypoint.sh
 RUN RAILS_ENV=production DISABLE_DB=true SECRET_KEY_BASE=precompile_only bundle exec rake assets:precompile
 
 ################################################
-#  🏃‍♂️  Stage 2 – runtime only (tiny image)
+#  🏃‍♂️  Stage 2 – production image
 ################################################
-FROM ruby:3.3.5-slim
+FROM ruby:3.3.8-slim AS prod
 
 # ➜ install only the shared lib, not the dev headers
 RUN --mount=type=cache,target=/var/cache/apt \
@@ -62,4 +62,41 @@ USER app
 
 # Puma listens on 0.0.0.0:3000
 EXPOSE 3000
-CMD ["/usr/local/bin/docker_entrypoint.sh"]
+CMD ["/usr/local/bin/docker_entrypoint.sh"]
+
+############################################
+#  🏗  Stage 3 – development environment
+############################################
+FROM ruby:3.3.8-slim AS dev
+
+# Essential OS packages (compile + JS pipeline)
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+    curl \
+    build-essential libpq-dev git \
+    nodejs npm tzdata
+
+# Copy only Gemfiles to install dependencies early
+WORKDIR /app
+COPY Gemfile Gemfile.lock ./
+RUN bundle install --jobs 4 --retry 3
+
+# Environment setup for development
+ENV RAILS_ENV=development \
+    BUNDLE_WITHOUT='test' \
+    PORT=3000
+
+# App working directory
+WORKDIR /app
+
+# Mount source files for hot reloading
+COPY . .
+
+# Install foreman for managing processes
+RUN gem install foreman
+
+# Expose port for development
+EXPOSE 3000
+
+# Command to start the application with foreman
+CMD ["foreman", "start"]

README.md

@@ -21,7 +21,7 @@ Using docker is the fastest way to stand up Cypress for deployment and developme
 
 2. Spin up app with `docker compose up -d --build`
 
-*NOTE: comment/uncomment `- RAILS_ENV=development` in docker-compose.yml to switch between development and production environments. Development environment enables hot-reloading of code changes.*
+*NOTE: To spin up Cypress development environment, with hot-reloading enabled for code changes, run `docker compose -f docker-compose.dev.yml up -d`*
 
 Reporting Issues
 ================

docker-compose.dev.yml

@@ -0,0 +1,41 @@
+services:
+  nginx:
+    image: nginx:1.28-alpine
+    ports:
+      - "80:80"
+      - "443:443"
+    environment:
+      - USE_SSL=true
+    volumes:
+      - ./docker/nginx:/docker/nginx:ro
+      - ./docker/nginx/nginx-init.sh:/docker-entrypoint.d/nginx-init.sh:ro
+  cypress:
+    image: cypress:dev
+    platform: linux/amd64
+    build:
+      context: .
+      target: dev
+    volumes:
+      - cypress-vol:/app/public/data
+      - ./docker/config:/docker/config
+      - ./app:/app/app:ro
+      - ./config:/app/config:ro
+      - ./lib:/app/lib:ro  
+    environment:
+      - MONGO_PORT_27017_TCP_ADDR=mongodb
+      - MONGO_PORT_27017_TCP_PORT=27017
+      - CQM_EXECUTION_SERVICE_HOST=cqm-execution-service
+      - SECRET_KEY_BASE=insecure_5131595823afbc3e6af90151ea8991fb3fc7d66e2a352f7664e6ef83bf572cfce8669ce542793b1597f3266706e4bc1ae3dee7f9b5023496ac21990
+      - RAILS_ENV=development
+  mongodb:
+    image: mongo:8.0.9
+    volumes:
+      - mongo-data:/data/db
+      - ./mongo:/etc/mongo
+    command: --config=/etc/mongo/docker_mongod.conf
+  cqm-execution-service:
+    image: mitrehealthdocker/cqm-execution-service:cypress_v7
+    platform: linux/amd64
+volumes:
+  cypress-vol:
+  mongo-data:

docker-compose.yml

@@ -17,6 +17,7 @@ services:
     # Uncomment build section below to build a new image from source
     # build:
     #   context: .
+    #   target: prod
     volumes:
       - cypress-vol:/app/public/data
       - ./docker/config:/docker/config